Tool and equipment adjusting and aligning measuring gauge

ABSTRACT

A measuring gauge includes an indicator having a measuring shaft for engaging with a point. A main bar includes at least one pair of a first passage and a second passage intersecting with the first passage. The first and second passages have the same size and shape of cross sections. The measuring shaft is removably received in the first passage. Threaded bores are defined in the main bar and spaced from the first and second passages. A clamp is removably received in the second passage and retains the measuring shaft. Two legs are selectively and removably engaged with the main bar. Each leg slideably abuts the main bar. A shaper spindle adapter is selectively engaged with the main bar. Two knobs are engaged with two of the threaded bores and selectively fix the legs or the shaper spindle adapter to the main bar.

CROSS REFERENCE TO RELATED APPLICATION

The present application claims benefit of U.S. Application No.61/376,730 filed Aug. 25, 2010.

BACKGROUND

A gauge, particularly a measuring gauge, is shown for adjusting andaligning tools and equipment, and more particularly, for adjusting andaligning woodworking tools.

During normal use of shapers, routers, jointers, drill presses, tablesaws, and the like, it is desired to check alignment of elementsrelative to each other such as cutters, blades, bits, fences, decks,bases, arbors, shafts, grooves, and the like. Although severalalignment/adjustment gauges are on the market for some applications,conventional gauges have only limited applications and cannot performall of the desired applications.

Thus, a need exists in the field of adjustment and alignment gauges forproviding a measuring gauge which utilizes an indicator which providesinstant, precise readings of vertical and horizontal positions ofcutters and machine components and utilizing components providing a widerange of mounting arrangements for various applications including butnot limited to gauging roundness of shafts, arbors, and the like,setting bit cutting depths, adjusting router fences, leveling extensionwings or table saw throat inserts, setting heights of blades, settingfences relative to cutters or bearings, gauging whether blades of tablesaws are parallel to guide grooves, gauging whether spindles areperpendicular to top surfaces of shapers, and the like.

BRIEF SUMMARY

This need and other problems in the field of instant, precise readingsof vertical and horizontal positions of tool and machine components aswell as a wide range of mounting arrangements are solved by providing,in an aspect, a measuring gauge including an indicator having ameasuring shall that is adapted to engage with a point. A main barincludes a first passage and a second passage intersecting with thefirst passage, with the first passage and the second passage having thesame size and shape of cross sections. The measuring shaft of theindicator is removably received in the first passage. A clamp isremovably received in the second passage and retains the measuring shaftof the indicator. The main bar further includes a plurality of threadedbores spaced from the first and second passages. First and second legsare selectively engaged with the main bar. Each of the first and secondlegs includes a plurality of holes spaced in a first direction. A frontof each of the first and second legs slideably abuts the main bar. Ashaper spindle adapter is selectively engaged with the main bar. Anopening extends between a front and a back of the shaper spindle adapteropposite to the front. The opening of the shaper spindle adapter isadapted for securely holding a spindle of a shaper. First and secondthrough-holes extend between the front and the back of the shaperspindle adapter and are spaced from the opening. First and second knobsare engaged with two of the plurality of threaded bores in the main barand selectively fix the first and second legs or the shaper spindleadapter to the main bar. The measuring gauge can include only one orboth of the shaper spindle adapter and the first and second legs.

When the first and second legs engage with the main bar, the first andsecond knobs extend through one of the plurality of holes of the firstand second legs into two of the plurality of threaded bores of the mainbar, and the first leg is spaced from the second leg in a seconddirection perpendicular to the first direction.

When the shaper spindle adapter engages with the main bar and with thefirst and second legs removed from the main bar, the first and secondknobs extend through the first and second through-holes of the shaperspindle adapter into two of the plurality of threaded bores of the mainbar to fix the shaper spindle adapter to the main bar.

In the form shown, the clamp includes a plug having an outer peripheryslideably received in the shape of cross sections of the second passage.The clamp further includes a bolt having a shaft threadable in athreaded through-hole of the plug. Rotation of an enlarged head of thebolt moves the plug in the second passage to frictionally engage arecess in the outer periphery of the plug with the measuring shaft toretain the indicator relative to the main bar.

In the form shown, the main bar includes opposite first and secondsurfaces and opposite first and second sides extending perpendicularlyto and between the first and second surfaces. The main bar furtherincludes a first bevel extending between the first side and the firstsurface and a second bevel extending between the first side and thesecond surface. The main bar includes a plurality of pairs of the firstand second passages. The first passages of the plurality of pairs of thefirst and second passages extend between the first and second surfaces.The second passages of the plurality of pairs of the first and secondpassages extend between the first and second sides. The front of each ofthe first and second legs includes a plurality of indentations spaced inthe first direction. Each of the plurality of indentations of each ofthe first and second legs includes first and second sidewalls slideablyabutting the first and second bevels of the main bar. Each of theplurality of indentations of each of the first and second legs furtherincludes a bottom wall extending between the first and second sidewallsand slideably abutting the first side of the main bar. Each of theplurality of holes of each of the first and second legs extends throughthe bottom wall of one of the plurality of indentations. Centers of theplurality of holes of each of the first and second legs are spaced fromeach other at a regular interval.

Illustrative embodiments will become clearer in light of the followingdetailed description described in connection with the drawings.

DESCRIPTION OF THE DRAWINGS

The illustrative embodiments may best be described by reference to theaccompanying drawings where:

FIG. 1 shows an exploded, perspective view of a measuring gauge.

FIGS. 2-5 show perspective views of the measuring gauge of FIG. 1 indifferent applications of measurement, alignment, and setting.

All figures are drawn for ease of explanation of the basic teachingsonly; the extensions of the figures with respect to number, position,relationship, and dimensions of the parts to form the illustrativeembodiments will be explained or will be within the skill of the artafter the following teachings have been read and understood. Further,the exact dimensions and dimensional proportions to conform to specificforce, weight, strength, and similar requirements will likewise bewithin the skill of the art after the following teachings have been readand understood.

Where used in the various figures of the drawings, the same numeralsdesignate the same or similar parts. Furthermore, when the terms “top”,“bottom”, “first”, “second”, “third”, “fourth”, “fifth”, “sixth”,“front”, “back”, “height”, “width”, “length”, “end”, “side”,“horizontal”, “vertical”, and similar terms are used herein, it shouldbe understood that these terms have reference only to the structureshown in the drawings as it would appear to a person viewing thedrawings and are utilized only to facilitate describing the illustrativeembodiments.

DETAILED DESCRIPTION

A measuring gauge utilized for adjusting and aligning tools andequipment, such as woodworking tools, is generally shown in the drawingsand generally designated 10. In particular, measuring gauge 10 utilizesan indicator 12 to provide instant readings of vertical and horizontalpositions of cutters and machine components. In the form shown,indicator 12 is a conventional dial indicator such as purchased fromPhase II Plus of Carlstadt N.J. 07072. However, indicator 12 can be ofother forms and types.

In the form shown, indicator 12 includes a measuring shaft 14 includinga counterbore. It can be appreciated that various contact points can beadded including a short cylindrical contact point 16, a long cylindricalpoint 18, a bullet shaped point 20, and an L-shaped, edge guide point22, with short cylindrical contact point 16, long cylindrical 18 andbullet shaped point 20 shown as including an integral stud forthreadable receipt in the counterbore of measuring shaft 14, while edgeguide point 22 includes a screw for threadable receipt in thecounterbore of measuring shaft 14.

Measuring gauge 10 generally includes a main bar 30 having generallyrectangular cross sections. In the form shown, main bar 30 includes afirst surface 36 and a second surface 38 opposite and parallel to firstsurface 36. Main bar 30 further includes a first side 34 and a secondside 40 opposite and parallel to first side 34. First and second sides34 and 40 extend perpendicularly to and between first and secondsurfaces 36 and 38. Main bar 30 further includes first and second endfaces 37 a and 37 b extending between first and second surfaces 36 and38 and between first and second sides 34 and 40. A first bevel 32 aextends between and at an obtuse angle to first side 34 and firstsurface 36. A second bevel 32 b extends between and at an obtuse angleto first side 34 and second surface 38.

A plurality of indicator mounting provisions 42 are provided in main bar30. In the form shown, each indicator mounting provision 42 includesintersecting, generally perpendicular passages including a first passage42 a extending between first and second surfaces 36 and 38 and a secondpassage 42 b extending between first and second sides 34 and 40. Firstand second passages 42 a and 42 b have the same size and shape of crosssections which are circular in the form shown. In the form shown, mainbar 30 includes four pairs of first and second passages 42 a and 42 b.One of first passages 42 a is located in an end of main bar 30 adjacentto first end face 37 a of main bar 30. The other three first passages 42a are located in an intermediate section of main bar 30 and spaced fromfirst passage 42 a in the end of main bar 30 by at least one fourth ofthe length between first and second end faces 37 a and 37 b. The firstand second passages 42 a and 42 b are spaced from second end face 37 bof main bar 30 by at least one fourth of the length between first andsecond end faces 37 a and 37 b. It can be appreciated that firstpassages 42 a can extend between first and second sides 34 and 40,whereas second passages 42 b can extend between first and secondsurfaces 36 and 38.

Each indicator mounting provision 42 further includes a clamp 46 forclamping measuring shaft 14 for indicator 12 in one of first and secondpassages 42 a and 42 b as desired. In the form shown, clamp 46 includesa plug 48 having a threaded through-hole 49 and having cross sectionscorresponding to and for slideable receipt in either passage 42 a or 42b. Plug 48 includes a recess 50 formed in its outer periphery of a crosssection compatible with measuring shaft 14. Namely, the outer peripheryof plug 48 is slideably received in the shape of cross sections ofeither passage 42 a or 42 b. Clamp 46 further includes a bolt 52 havinga shaft 51 threadable in threaded through-hole 49 of plug 48 and anenlarged head 53 (which could include a compressible washer) for manualrotation without tools. To clamp indicator 12 to main bar 30, plug 48 isplaced in one of passages 42 a and 42 b with recess 50 aligned with theother passage 42 a or 42 b. Measuring shaft 14 can be inserted in theother passage 42 a or 42 b and recess 50, with a portion of measuringshaft 14 received in passage 42 a or 42 b having the same size and shapeof cross sections as passage 42 a and 42 b. Shaft 51 of bolt 52 can bethreaded into threaded through-hole 49 of plug 48 until enlarged head 53abuts with main bar 30. Thus, plug 48 is pulled within passage 42 a or42 b to frictionally engage recess 50 with measuring shaft 14 to retainindicator 12 relative to main bar 30.

According to the form shown, main bar 30 further includes a plurality ofthreaded bores 60 extending between first and second sides 34 and 40 andspaced from first and second passages 42 a and 42 b. In the form shown,main bar 30 includes first, second, third, fourth, fifth, and sixththreaded bores 60 arranged from first end face 37 a to second end face37 b. First threaded bore 60 is located between the first two of secondpassages 42 b adjacent to first end face 37 a. Second threaded bore 60is located between the second and third ones of second passages 42 b.Third and fourth threaded bores 60 are located between the third andlast ones of second passages 42 b. Fifth and sixth threaded bores 60 arelocated between the last second passage 42 b and second end face 37 b.

According to the form shown, measuring gauge 10 includes a plurality oflegs 70 of a generally rectangular cross section. Each leg 70 includes afront 72 and a back 78 opposite to front 72. Front 72 of each leg 70includes a plurality of spaced indentations 74 of a shape correspondingto and for slideably receiving first and second bevels 32 a and 32 b andfirst side 34 of main bar 30. Each indentation 74 includes a hole 76extending from front 72 to back 78. Specifically, each indentation 74 ofeach leg 70 includes first and second sidewalls 74 a slideably abuttingfirst and second bevels 32 a and 32 b of main bar 30. Each indentation74 of each leg 70 further includes a bottom wall 74 b extending betweenfirst and second sidewalls 74 a and slideably abutting first side 34 ofmain bar 30. Each hole 76 of each leg 70 extends through bottom wall 74b of one indentation 74. The centers of holes 76 of each leg 70 arespaced from each other at a regular interval and are spaced by one inchin the form shown. Each leg 70 further includes an end 80 extendingperpendicular to and between front 72 and back 78. End 80 of each leg 70includes a tapped hole. A tapped hole is also provided in front 72intermediate end 80 and a first one of indentations 74 adjacent to end80.

According to the form shown, measuring gauge 10 further includes aplurality of miter slot bar extensions 86 having generally rectangularcross sections. Each miter slot bar extension 86 includes a front 88 anda back 94 opposite to front 88. Front 88 of each miter slot barextension 86 includes a projection 90 of a shape corresponding toindentation 74 and to first and second bevels 32 a and 32 b and firstside 34 of main bar 30. Specifically, projection 90 includes a flat face90 a parallel to and spaced from front 88 and first and second inclinedfaces 90 b extending between front 88 and flat face 90 a, with flat face90 a extending between first and second inclined faces 90 b. First andsecond threaded tunnels 92 a and 92 b extend between front 88 and back94, with first threaded tunnel 92 a extending through projection 90.Projection 90 can be received in one of the indentations 74 of a leg 70and secured thereto such as by a knob 96 extending through one of holes76 and threadably received in first threaded tunnel 92 a. Specifically,flat face 90 a of projection 90 abuts bottom wall 74 b of indentation74, and first and second inclined faces 90 b abut first and secondsidewalls 74 a of indentation 74.

According to the form shown, measuring gauge 10 further includes a miterslot bar 98 of generally rectangular cross sections. Miter slot bar 98includes a front 101 and a back 103 opposite to front 101. Miter slotbar 98 further includes first and second through-holes 100 extendingbetween front 101 and back 103. Each of first and second through-holes100 has a conical counterbore extending from back 103. Miter slot bar 98also includes a socket extending from a first face 105 extending betweenfront 101 and back 103, with the socket being spaced from a second face107 opposite to first face 105. The socket receives a spring biaseddetent that can push miter slot bar 98 securely against a side of amiter gauge slot machined into a machinery table to eliminate lateralmovement, providing accurate and consistent measurement readings. Thus,front 101 of miter slot bar 98 can abut with backs 94 of miter slot barextensions 86 and is attached thereto by screws 104 extended throughfirst and second through-holes 100 and threadably received in secondthreaded tunnels 92 b.

According to the form shown, measuring gauge 10 further includes asupport foot 110 for each leg 70 of generally rectangular crosssections. Each support foot 110 includes a top 111 and a bottom 113opposite to top 111. A through-hole 112 extends between top 111 andbottom 113 of each support foot 110 and includes a conical counterboreextending from bottom 113. A cylindrical recess 115 is formed in bottom113 of each support foot 110 and spaced from through-hole 112. A magnet114 is securely received in recess 115 of each support foot 110. Magnet114 can be a rare earth magnet. Top 111 of each support foot 110 canabut with end 80 of leg 70, with support foot 110 attached to leg 70such as by a screw 116 extending through-hole 112 and threaded into thetapped hole formed in end 80.

According to the form shown, measuring gauge 10 further includes ashaper spindle adapter 136 having a front 135 and a back 139 opposite tofront 135. An opening 140 in the form shown having a shape such as atear drop extends between front 135 and back 139. Shaper spindle adapter136 further includes a plurality of through-holes 137 extending betweenfront 135 and back 139 and spaced from opening 140.

According to the form shown, the elements of measuring gauge 10 can besuitably arranged such that indicator 12 is supported intermediate legs70 or in a cantilevered manner to measure vertical and/or horizontaldistances for purposes of adjusting and aligning tools and equipment.For purposes of explanation and not limitation, various arrangements ofthe elements of measuring gauge 10 will be shown and described. As anexample, FIG. 2 shows support feet 110 resting upon a base 118 of arouter or a router table having a rotating shaft 120. Short cylindricalcontact point 16 on measuring shaft 14 of indicator 12 locatedintermediate legs 70 attached to first side 34 engages rotating shaft120 to gauge roundness of rotating shaft 120. Legs 70 are spaced fromeach other in a direction perpendicular to the direction in which holes76 of legs 70 are spaced from each other. In a similar manner, ifindicator 12 is arranged to be parallel to legs 70 (rather thanperpendicular as shown in FIG. 2), measuring gauge 10 could be utilizedto set the bit cutting depth such as utilizing short cylindrical contactpoint 16 or edge guide point 22, to adjust a router fence utilizing edgeguide point 22, or the like. Further, if indicator 12 is rotated 180°relative to main bar 30, measuring gauge 10 could be utilized for finefence adjustment including but not limited to be flush with a guidebearing of a router bit. Furthermore, rotating shaft 120 can be of asize for slideable receipt in first or second passages 42 a or 42 b andheld therein such as by a knob threadably received in a threaded axialbore formed in rotating shaft 120. Thus, rotating shaft 120 is utilizedas a router/drill press adopter so that measuring gauge 10 can beutilized for alignment/adjustment thereof.

In another example, indicator 12 can be attached to the end of main bar30 supported generally parallel to a deck 122 of a table saw having anarbor 124 by support feet 110 resting upon deck 122 and attached to legs70 attached to first side 34, as shown in FIG. 3. Long cylindrical point18 on measuring shaft 14 of indicator 12 engages arbor 124 to gaugeroundness of arbor 124. Likewise, measuring gauge 10 in the arrangementof FIG. 3 could be utilized to level an extension wing or a table sawthroat insert, to set height of a blade 128 of the table saw, to set afence relative to the cutter or bearings thereof, whether the fence isstraight or offset, or the like.

FIG. 4 shows miter slot bar 98 located in a guide groove 126 of deck 122secured to backs 94 of miter slot bar extensions 86 secured to fronts 72of legs 70 secured to first side 34 of main bar 30. Short cylindricalcontact point 16 on measuring shaft 14 of indicator 12 locatedintermediate legs 70 engages with blade 128 secured to arbor 124 of thetable saw to gauge if blade 128 is parallel to guide groove 126.Likewise, measuring gauge 10 in the arrangement of FIG. 4 could be usedto align a fence with guide groove 126.

In a further example, shaper spindle adapter 136 can be attached to mainbar 30 by knobs 96 extending through through-holes 137 and threaded intothreaded bores 60 of main bar 30. A spindle 138 of a shaper can beextended through and suitably secured to opening 140 such as in a mannershown in FIG. 5 or can be attached directly to main bar 30 by knob 96extending through first passage 42 a. Main bar 30 can be rotated so thatbullet shaped point 20 moves on the top surface of the shaper to gaugeif spindle 138 is perpendicular to the top surface.

Now that the basic teachings have been explained, many extensions andvariations will be obvious to one having ordinary skill in the art. Forexample, the number of legs 70, support feet 110, miter slot barextensions 86, and miter slot bar 98 can be varied according to needs.Likewise, the number and location of first and second passages 42 a and42 b and threaded bores 60 in main bar 30, of indentations 74 and holes76 in each leg 70, and of magnet 114 of each support foot 110 can bevaried according to needs.

Measuring gauge 10 provides a modular design allowing use for verticalor horizontal measurements. Four holes 76 with centers spaced by oneinch in each leg 70 provide four height mounting positions along legs 70to allow accurate height measurements up to 3 inches and depth readingsup to 2 inches. Threaded bores 60 provide a plurality of leg mountingpositions along the length of main bar 30 so that main bar 30 can adaptto different sizes and shapes of the reference face. Since first andsecond sidewalls 74 a and bottom wall 74 b of each leg 70 slideably abutfirst and second bevels 32 a and 32 b and first side 34 of main bar 30,legs 70 can smoothly and rapidly slide along the length of main bar 30to desired locations of threaded bores 60. First and second inclinedfaces 90 b and flat face 90 a of projection 90 of each miter slot barextension 86 slideably abut first and second sidewalls 74 a and bottomwall 74 b of indentation 74 of either leg 70, allowing fast, secureengagement of miter slot bar extension 86 to leg 70.

Furthermore, multiple pairs of first and second passages 42 a and 42 bprovide multiple indicator locations along main bar 30, enablingindicator 12 to either span over a measurement point or cantilever fromone side. Clamp 46 allows indicator 12 to be rotated 360° and mountedvertically, horizontally, or even inverted. Further, legs 70 can belocated firmly on a magnetic surface by attachment of support feet 110with magnets 114. The socket of miter slot bar 98 receives a springbiased detent that can push miter slot bar 98 securely against a side ofa miter gauge slot machined into a machinery table to eliminate lateralmovement, providing accurate and consistent measurement readings. Theelements of measuring gauge 10 can be changed without tools for quickand easy use on various tools for adjustment, measurement, alignment,setting of depth of tool elements. All elements of measuring gauge 10can be stored in a small storage case to allow easy carriage andstorage.

Although the embodiments shown provide a very wide range of mountingarrangements, novel features of the illustrative embodiments could beutilized while omitting some and/or could be utilized with the otherfeatures in other arrangements than shown for a different/narrower rangeof mounting arrangements.

Thus since the illustrative embodiments disclosed herein may be embodiedin other specific forms without departing from the spirit or generalcharacteristics thereof, some of which forms have been indicated, theembodiments described herein are to be considered in all respectsillustrative and not restrictive. The scope is to be indicated by theappended claims, rather than by the foregoing description, and allchanges which come within the meaning and range of equivalency of theclaims are intended to be embraced therein.

1. A measuring gauge comprising, in combination: an indicator includinga measuring shaft, with the measuring shaft adapted to engage with apoint; a main bar including at least one pair of a first passage and asecond passage intersecting with the first passage, with the firstpassage and the second passage having a same size and shape of crosssections, with the measuring shaft of the indicator removably receivedin the first passage, with the main bar further including a plurality ofthreaded bores spaced from the first and second passages; a clampremovably received in the second passage and retaining the measuringshaft of the indicator; first and second legs selectively engaging withthe main bar, with each of the first and second legs including a frontand a back opposite to the front, with each of the first and second legsfurther including a plurality of holes spaced in a first direction, withthe front of each of the first and second legs slideably abutting themain bar; and first and second knobs selectively fixing the first andsecond legs to the main bar, wherein with the first and second legsengaging with the main bar, the first and second knobs extend throughone of the plurality of holes of the first and second legs into two ofthe plurality of threaded bores of the main bar, with the first legspaced from the second leg in a second direction perpendicular to thefirst direction.
 2. The measuring gauge as claimed in claim 1, furthercomprising, in combination: a shaper spindle adapter selectivelyengaging with the main bar, with the shaper spindle adapter including afront and a back opposite to the front of the shaper spindle adapter,with an opening extending between the front and the back of the shaperspindle adapter, with first and second through-holes extending betweenthe front and the back of the shaper spindle adapter and spaced from theopening, with the opening of the shaper spindle adapter adapted forsecurely holding a spindle of a shaper, wherein with the shaper spindleadapter engaging with the main bar and with the first and second legsremoved from the main bar, the first and second knobs extend through thefirst and second through-holes of the shaper spindle adapter into two ofthe plurality of threaded bores of the main bar to fix the shaperspindle adapter to the main bar.
 3. The measuring gauge as claimed inclaim 1, with the clamp including a plug having a threaded through-hole,with the plug including an outer periphery having a recess, with theouter periphery of the plug slideably received in the shape of crosssections of the second passage, with the clamp further including a bolthaving a shaft threadable in the threaded through-hole of the plug, withthe bolt further having an enlarged head, with rotation of the enlargedhead moving the plug in the second passage to frictionally engage therecess of the plug with the measuring shaft to retain the indicatorrelative to the main bar.
 4. The measuring gauge as claimed in claim 1,with the main bar including a first surface and a second surfaceopposite to the first surface, with the main bar further including afirst side and a second side opposite to the first side, with the firstand second sides extending perpendicularly to and between the first andsecond surfaces, with the first passage extending between one of thefirst and second surfaces and of the first and second sides, with thesecond passage extending between the other of the first and secondsurfaces and of the first and second sides, with the plurality ofthreaded bores of the main bar extending between the first and secondsides, with the front of each of the first and second legs slideablyabutting the first side of the main bar when the first and second knobsfix the first and second legs to the first side of the main bar.
 5. Themeasuring gauge as claimed in claim 4, with the main bar furtherincluding a first bevel extending between the first side and the firstsurface, with the main bar further including a second bevel extendingbetween the first side and the second surface, with the front of each ofthe first and second legs including a plurality of indentations spacedin the first direction, with each of the plurality of indentations ofeach of the first and second legs including first and second sidewallsslideably abutting the first and second bevels of the main bar, witheach of the plurality of indentations of each of the first and secondlegs further including a bottom wall extending between the first andsecond sidewalls and slideably abutting the first side of the main bar.6. The measuring gauge as claimed in claim 5, with each of the pluralityof holes of each of the first and second legs extending through thebottom wall of one of the plurality of indentations, with centers of theplurality of holes of each of the first and second legs spaced from eachother at a regular interval.
 7. The measuring gauge as claimed in claim5, with the at least one pair of the first and second passages includinga plurality of pairs of the first and second passages, with the firstpassages of the plurality of pairs of the first and second passagesextending between the first and second surfaces, with the secondpassages of the plurality of pairs of the first and second passagesextending between the first and second sides.
 8. The measuring gauge asclaimed in claim 7, with the main bar including first and second endfaces extending between the first and second surfaces and between thefirst and second sides, with the first and second end faces having alength therebetween, with the first passage of one of the plurality ofpairs of the first and second passages located in an end of the main baradjacent to the first end face, with the first passages of the remainingof the plurality of pairs of the first and second passages located in anintermediate section of the main bar and spaced from the first passageof the one of the plurality of pairs of the first and second passages inthe end by at least one fourth of the length.
 9. The measuring gauge asclaimed in claim 7, further comprising, in combination: first and secondmiter slot bar extensions each having a front and a back opposite to thefront, with the front of each of the first and second miter slot barextensions including a projection of a shape corresponding to each ofthe plurality of indentations of the first and second legs and to thefirst and second bevels and the first side of the main bar, with each ofthe first and second miter slot bar extensions including a threadedtunnel extending between the front and the back thereof, with one of theplurality of indentations of each of the first and second legs engagedwith the first side of the main bar, with the projection of the firstmiter slot bar received in another of the plurality of indentations ofthe first leg with a third knob extending through the other of theplurality of indentations of the first leg and threadably received inthe threaded tunnel of the first miter slot bar extension, with theprojection of the second miter slot bar received in another of theplurality of indentations of the second leg with a fourth knob extendingthrough the other of the plurality of indentations of the second leg andthreadably received in the threaded tunnel of the second miter slot barextension; and a miter slot bar removably mounted to the backs of thefirst and second miter slot bar extensions.
 10. The measuring gauge asclaimed in claim 9, with the projection of each of the first and secondmiter slot bar extensions including a flat face parallel to and spacedfrom the front thereof, with the projection of each of the first andsecond miter slot bar extensions further including first and secondinclined faces extending between the front and the flat face, with theflat face extending between the first and second inclined faces, withthe flat face of the first miter slot bar extension abutting the bottomwall of the other of the plurality of indentations of the first leg,with the first and second inclined faces of the first miter slot barextension abutting the first and second sidewalls of the other of theplurality of indentations of the first leg, with the flat face of thesecond miter slot bar extension abutting the bottom wall of the other ofthe plurality of indentations of the second leg, with the first andsecond inclined faces of the second miter slot bar extension abuttingthe first and second sidewalls of the other of the plurality ofindentations of the second leg.
 11. The measuring gauge as claimed inclaim 7, further comprising, in combination: a support foot removablymounted to each of the first and second legs, with each of the first andsecond legs including an end extending perpendicular to and between thefront and the back thereof, with each of the support feet including atop and a bottom opposite to the top, with the tops of the support feetabutting with the ends of the first and second legs, with a recessformed in the bottom of each of the support feet, with a magnet securelyreceived in the recess of each of the support feet, with the magnetadapted to locate firmly on a magnetic surface.
 12. A measuring gaugecomprising, in combination: an indicator including a measuring shaft,with the measuring shaft adapted to engage with a point; a main barincluding at least one pair of a first passage and a second passageintersecting with the first passage, with the first passage and thesecond passage having a same size and shape of cross sections, with themeasuring shaft of the indicator removably received in the firstpassage, with the main bar further including a plurality of threadedbores spaced from the first and second passages; a clamp removablyreceived in the second passage and retaining the measuring shaft of theindicator; a shaper spindle adapter removably engaged with the main bar,with the shaper spindle adapter including a front and a back opposite tothe front of the shaper spindle adapter, with an opening extendingbetween the front and the back of the shaper spindle adapter, with firstand second through-holes extending between the front and the back of theshaper spindle adapter and spaced from the opening, with the opening ofthe shaper spindle adapter adapted for securely holding a spindle of ashaper; and first and second knobs releasably fixing the shaper spindleadapter to the main bar, wherein with the shaper spindle adapterengaging with the main bar, the first and second knobs extend throughthe first and second through-holes into two of the plurality of threadedbores of the main bar to fix the shaper spindle adapter to the main bar.13. The measuring gauge as claimed in claim 12, with the clamp includinga plug having a threaded through-hole, with the plug including an outerperiphery having a recess, with the outer periphery of the plugslideably received in the shape of cross sections of the second passage,with the clamp further including a bolt having a shaft threadable in thethreaded through-hole of the plug, with the bolt further having anenlarged head, with rotation of the enlarged head moving the plug in thesecond passage to frictionally engage the recess of the plug with themeasuring shaft to retain the indicator relative to the main bar. 14.The measuring gauge as claimed in claim 12, with the main bar includinga first surface and a second surface opposite to the first surface, withthe main bar further including a first side and a second side oppositeto the first side, with the first and second sides extendingperpendicularly to and between the first and second surfaces, with thefirst passage extending between one of the first and second surfaces andof the first and second sides, with the second passage extending betweenthe other of the first and second surfaces and of the first and secondsides, with the plurality of threaded bores of the main bar extendingbetween the first and second sides.
 15. The measuring gauge as claimedin claim 14, with the at least one pair of the first and second passagesincluding a plurality of pairs of the first and second passages, withthe first passages of the plurality of pairs of the first and secondpassages extending between the first and second surfaces, with thesecond passages of the plurality of pairs of the first and secondpassages extending between the first and second sides.
 16. The measuringgauge as claimed in claim 15, with the main bar including first andsecond end faces extending between the first and second surfaces andbetween the first and second sides, with the first and second end faceshaving a length therebetween, with the first passage of one of theplurality of pairs of the first and second passages located in an end ofthe main bar adjacent to the first end face, with the first passages ofthe remaining of the plurality of pairs of the first and second passageslocated in an intermediate section of the main bar and spaced from thefirst passage of the one of the plurality of pairs of the first andsecond passages in the end by at least one fourth of the length.